Ok so I made a computer with an X2 4000+ 2 gigs of kingston value ram, Biostar TF 570 SLI mobo, the superclocked 8800 and a 450 watt dual 12 v rail powersupply with 17 amps on each of those rails. Now when playing games like the bioshock demo, medal of honor airborne demo and even crysis once, the computer would lock, as in sit at a still image of the game forever until i hit the power. I thought it was a power supply issue so i bought an Apevia Ice berg 680 watt PS. Still this has not fixed the problem. This problem also occurs for the game World in Conflict. I should also state the this computer is oced with the 4000+ at 2.7 ghz and the ram at somewhere less than 800mhz i wanna say maybe 7 something. But even with everything at stock it makes no difference and the problems will still occur. I didn't seem to have any problem with call of duty 4 interestingly enough so I'm not really sure whats causing it. All the games run great until they lock. Ive checked temperature and im a little above 60 C under load... I can get away with running world in conflict at 1024 x 768 medium and it wont lock... so... do I need to send my video card back to evga or what? Also drivers do not seem to affect the problem as i have tried a million of them.